Improvement in coating sheet-iron with tin and other metals



2 Sheets-Sheet 1.

E. MOREWOOD.

Coating Sheet Iron with Ti'n and other Metals.

Patented Sept. 4, 1866.

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Coating Sheet Iron with Tin and other Metals. No. 57,832. Patented Sept.4,1866.

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UNITED STATES PATENT OFFroE.

EDMUND MOREWOOD, OF LONDON, ENGLAND.

IMPROVEMENT IN COATING SHEET-IRON WITH TIN AND OTHER METALS.

Specification forming part of Letters Patent No. 57,832, dated September4, 1866.

To allwhom it may concern:

Be it known that I, EDMUND MoREwooD, of Stratford, in London, England,have invented and made a certain new and useful Improvement in CoatingSheets or Pieces of Metal with Tim, Zinc, orother Metals or Alloys; andIdo hereby declare the following to be afull, clear, and exactdescription of my said invention, reference being had to the annexeddrawings, making part of this specification, wherein- Figure 1 is avertical longitudinal section of my improved bath or coating apparatus.Fig. 2 is an elevation of the withdrawing-rollers. Fig. 3 is a sideview. Fig. 4 is an edge view of the rubbing or wiping surfaces betweenwhich the sheet of metal is passed. Figs. 5 and 6 are vertical sectionsof modifications in the coating apparatus.

Similar marks of reference denote the same parts.

My invention relates to an apparatus placed in the bath of coating-metalto receive the sheets or pieces of metal at one place, and convey themautomatically and deliver them upward by a pair of withdrawing-rollers.By this apparatus the sheets of metal can be al lowed to remain in thebath of coating-metal the required length of time to loose the fluxthrough which they entered, and they are delivered at a point wherethere are less injurious and undesirable matters in the bath thanwherethe sheets are introduced.

In the drawings, W is a bath of coatingmetal, heated in any desired orconvenient manner. 0 is a carriage within said bath, connected at I withthe chain or belt I to the pulleys K, and to said pulleys K motion isgiven by any suitable mechanism, so that the carriage O can be drawnback and forth within the bath. B is a tube or slide, of a size andshape adapted to the reception of the sheet or piece of metal to becoated. At the bottom of this slide B is a latch, B, that is withdrawnby a latch, O, on said carriage O, to allow the sheet A to pass downinto a receptacle or rack in O. There is a weight, 0 to each of thelatches C, so that the latches will turn and not operate when thecarriage is going in one direction, but they will act upon B in goingthe other way. Around the lower end of the slide B is a casing orreceptacle, D, for

flux, that confines said flux to that part of the surface of thecoating-metal.

As the carriage G passes in one direction the sheets of metal A aredeposited successively in the receptacles or racks (J, provided I forthem, and if desired may remain until the carriage has been drawn backand forth in the bath ofi'nel'ted coatingmetal; or said sheets or piecesof metal in aybe withdrawn (immediately on arriving belowdelivery-rollers F F) bymeans of a pair of hooks, D, actuated by cranksE, said hooks 1) being so placed as to take one on each side of thesheet and raise them successively to rollers F F, that withdraw thesheets. As the sheet of metal is raised it may pass between guides G andrubbing-surfaces G, that may be made as shown in Figs. 3 and 4, and. actto smooth or lessen or reduce the coating-metal and improve the surfaceof the sheet of metal.

The rollers F F are within a casing or bath, L, of flux, heated by hotair passing through tubes L, and clean pure metal may be supplied Withinsaid casing and remain upon the coating-metal in the bath XV, to'give tothe sheet or piece of metal a surface-coating of better metal than thatin said bath WV.

In cases where it is desired to deliver the sheets from the bath WVwithout passing them through the wipers or rubbers G, they may be drawnoutby any competent means; but the sheets will require a secondoperation for equalizing and improving the surface. For

this purpose I employ the apparatus shown in Fig. 5, or that shown inFig. 6.

The sheets of metal A, having been coated with tin or terne metal, aredropped into the feeding tube or passage B, Fig. 5, and released by thecatch B being withdrawn by the arm 0 of the rack (J. The rack O with theplates A are then caused to move immediately under thewithdrawing-rollers F F.

On either end of the rack C, but within the bath \V, is a bar or frameacted upon by a connecting-rod to the crank E, as shown. These bars orframes rise up and carry with them the plate out of the rack 0, so as tocause the upper end of the plate to enter into the nip of thewithdrawing'rollers F, by which the plate is withdrawn. T/Vhile onedivision of the rack has been thus emptied the other division 'nected byeach arm, 0.

thereof has received a plate from the other feeding tube or passage, andthe empty division is caused to pass away to receive a fresh plate fromits feeding-tube, and the one containing a plate will by the samemovement bebronghtunderthe withdrawing-rollers. This lateral orhorizontal movement of the rack is obtained by means of the crank andconnecting-rod O and l, or it may be accomplished by other suitablemechanism; or, in place of causing the plates to rise out of the rack,they may be raised to the nip of the withdrawingrollers by means of alever and cam.

In Fig. 6 I have represented the feed-tube B, latch B, anddelivery-rollers F F in combination with a revolving plate-receiver, 0,moved progressively by the hook H and (rank 1 acting upon the teetharound the hub of said plate-receiver. The latch B is discon- As itcomes around. the plate A passes down into the holder G" in the bath WV.

D are arms on a shaft, H, with an arm, E to the cams D As a recess inthe cam D comes around a spring acting upon the arm E causes the plate Ato be raised sufficiently to be delivered by the rollers F.

It will be understood that the baths W are to contain oil, grease, orother flux, ator about the temperature of the melted coating-metal, andthat the rollers F are to be kept well coated with melted coating-metal,so as to equalize and improve the coating upon the plate of metal as itis withdrawn. If desired, a coating of metal of a better quality thanthat first applied to the metal plate may be added by the apparatusshown in Figs. 5 and 6, either by introducing said metal in the bath \V,or supplying it above the nip of the withdrawing-rollers.

In Fig. 7 I have shown a modification of my said apparatus, in which thereceptacle 0 is hung upon a shaft at the bottom, set in slides (J and bythe cranks L, connecting-rods M, and cam-slots K, the receptacle 0 ismoved from below the slide to a vertical position, and raised up so asto deliver-its plate to the withdrawing-rollers F F. I have shown inthis Fi 7 two pairs of these withdrawingrollers and two receptacles, G,working as aforesaid.

The rollers F are to be fitted as shown in Fig. 2, so that one of themmay yield to varying thicknesses in the sheet or piece of metal.

a is the axis of the roller, and b b rollers surrounding or on threesides of the axis. Said rollers I) b are covered with elastic material,in order that the axis a and the roller F may be allowed to yield.

What I claim, and desire to secure by Letters Patent, is

l. The slide B, to receive the sheet or piece of metal, to be coated, incombination with a receptacle, 0, within the bath of coatingmetal, toconvey said sheet or piece of metal. to the point of delivery,substantially as specified.

2. The delivery-rollers F, in combination with the receptacle 0 and anelevating apparatus to raise the sheets or pieces of metal to thedelivery rollers F, substantially as set forth.

3. Wipers or rubbers G, in combination with delivery-rollers F, to actupon the coating-metal previous to the delivery of the sheet or piece ofcoated metal, for the purposes and as specified.

4. A slide or receptacle in a bath of melted coating-metal to receivethe sheets or pieces of metal at one place and convey them to adifi'erent place in said bath, where said sheets or pieces are deliveredupward automatically from said bath, as set forth.

5. In combination with an apparatus for coating sheets or pieces ofmetal, substantially as described, a pair of deliveryrollers, one ofwhich is set in yielding bearings, so as to provide for varyingthicknesses of the sheets or of the coating, as set forth.

In witness whereof I have hereunto set my signature this 16th day ofMarch, A. D. 1866.

EDMUND MOREWVOOD.

Witnesses (J. Tnonoweoon,

24 Royal Exchange, London. M. WYNN,

2* Royal Exchange, London.

